People, crowds, speaking in public, talking to strangers* on the telephone, talking to strangers in person, being scrutinized by others, failure of any kind, disappointing expectations (be they real or assumed by me) others have in me, being left alone in the room with only one person I don't know very well, spiders. So, y'know, the usual. Edit: Oh and hairloss, of course.
*strangers=people I don't know REALLY well. So basically most people, including some family members and friends of friends.
*strangers=people I don't know REALLY well. So basically most people, including some family members and friends of friends.